Supermicro SuperServer 420GP-TNAR User Manual page 68

Backplane Connectors
Four backplane connectors are located at JMB_E1, JMB_E2, JMB_E3 and JMB_E4, next
to the proprietary power supplies connectors. They provide PCIe signals to the backplane.
TPM/Port 80 Header
The JTPM1 header is used to connect a Trusted Platform Module (TPM)/Port 80, which
is available from Supermicro (optional). A TPM/Port 80 connector is a security device that
supports encryption and authentication in hard drives. It allows the motherboard to deny
access if the TPM associated with the hard drive is not installed in the system. For more
information on TPM go to http://www.supermicro.com/manuals/other/TPM.pdf.
Complex Programmable Logical Device (CPLD) Headers
Two CPLD headers are located at JPRG1 and JPRG2. They provide connections to the
complex-programable logical devices.
Hard Drive Backplane Connectors
Two hard drive backplane connectors are located at JSLIM1A and JSLIM1B. They provide
PCIe signals to the hard drive backplane system.
Riser Card Connectors
Four riser card connectors are located at JSLIM3A, JSLIM3B, JSLIM4A and JJSLIM4B. They
provide connections to the riser cards.
Trusted Platform Module Header
Pin Definitions
Pin# Definition Pin# Definition
1 +3.3V 2 SPI_CS#
3 RESET# 4 SPI_MISO
5 SPI_CLK 6 GND
7 SPI_MOSI 8 NC
9 +3.3V Stdby 10 SPI_IRQ#
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Chapter 4: Motherboard Connections